DB2 FOR LUW / DB2FORLUW / B10 - DB2

Db2 may trap on memory validation failure. Symptom in the
db2diag.log file will report a "Memory validation failure" at
"sqloDiagnoseFreeBlockFailure" with a stack pointing to
sqlra_sqlW_mem_free_sibling_list:

...
FUNCTION: DB2 UDB, SQO Memory Management,
sqloDiagnoseFreeBlockFailure, probe:999
MESSAGE : Memory validation failure, diagnostic file dumped.
DATA #1 : String, 21 bytes
Corrupt block header.
DATA #2 : File name, 39 bytes
21730.4376861075728.mem_diagnostics.txt
CALLSTCK: (Static functions may not be resolved correctly, as
they are resolved to the nearest symbol)
[0] 0x000003FF8DFF37D2
_ZN13SQLO_MEM_POOL32diagnoseMemoryCorruptionAndCrashEmPKcb +
0x40A
[1] 0x000003FF8DFCEA28
/db2/home/db2inst1/sqllib/lib64/libdb2e.so.1 + 0xB9CEA28
[2] 0x000003FF8DFC7042 sqlofmblkEx + 0xA72
[3] 0x000003FF8F1A940E _Z8sqlristmP8sqlrr_cbP9sqlri_shdi + 0x4FA
[4] 0x000003FF8EC99754
_Z32sqlra_sqlW_mem_free_sibling_listP8sqlrr_cbP23sqlra_workspace
_siblingPm + 0x328C
[5] 0x000003FF8EC937BA
_Z24sqlra_sqlW_mem_freespaceP8sqlrr_cbmPmi + 0xD26
[6] 0x000003FF8EC8DCBE
_Z28sqlra_sqlW_check_for_cleanupP8sqlrr_cbmP7OSSTick + 0x7CA
[7] 0x000003FF8EC89A66
_Z33sqlra_sqlW_get_static_section_newP8sqlrr_cbP20sqlra_cached_s
ection + 0x10EE
[8] 0x000003FF8EB7E346
_Z17sqlra_get_sectionP8sqlrr_cbPhsS1_sS1_tmP16db2UCprepareInfoP1
5db2UCCursorInfoij + 0x24C6
[9] 0x000003FF8E812DF6
_Z21sqlrr_sql_request_preP14db2UCinterfacejiP16db2UCprepareInfoP
15db2UCCursorInfo + 0x9B6
[10] 0x000003FF8E87D7A0
_Z10sqlrr_openP14db2UCinterfaceP15db2UCCursorInfo + 0x2B0
[11] 0x000003FF84DF03A6
_Z7csmOpenP14db2UCinterfaceP15db2UCCursorInfo + 0xBA
[12] 0x000003FF85781760 _ZN10pvmPackage10openCursorEj + 0x2C8
[13] 0x000003FF8577C00A
_ZN10pvmPackage14executeSectionEP5sqlcajb + 0xE1E
[14] 0x000003FF8577A4BA _ZN3PVM12executeQueryEjb + 0x13A
[15] 0x000003FF85769704 _ZN3PVM3runEv + 0x624
[16] 0x000003FF85799CE6 pvm_entry + 0x40A
[17] 0x000003FF8DF1EFC2 sqloInvokeFnArgs + 0x2D1E
[18] 0x000003FF8F12B8A6
/db2/home/db2inst1/sqllib/lib64/libdb2e.so.1 + 0xCB2B8A6
[19] 0x000003FF8F128FE4 _Z18sqlriInvokeInvokerP10sqlri_ufobb +
0x2FC
[20] 0x000003FF8F1273C4 _Z9sqlricallP8sqlrr_cb + 0x4DC
[21] 0x000003FF8EF809DC
_Z15sqlriSectInvokeP8sqlrr_cbP12sqlri_opparm + 0x6CC
[22] 0x000003FF8E8C2570
_Z29sqlrr_process_execute_requestP8sqlrr_cbib + 0x1D74
[23] 0x000003FF8E8827E0
_Z13sqlrr_executeP14db2UCinterfaceP9UCstpInfo + 0x878
[24] 0x000003FF8C0E055E
_Z19sqljs_ddm_excsqlsttP14db2UCinterfaceP13sqljDDMObject + 0x3DE
[25] 0x000003FF8C0A025E
_Z21sqljsParseRdbAccessedP13sqljsDrdaAsCbP13sqljDDMObjectP14db2U
Cinterface + 0x1E2
[26] 0x000003FF8C0A1C78
_Z10sqljsParseP13sqljsDrdaAsCbP14db2UCinterfaceP8sqeAgentb +
0xF5C
[27] 0x000003FF8C08612A
/db2/home/db2inst1/sqllib/lib64/libdb2e.so.1 + 0x9A8612A
[28] 0x000003FF8C085254
/db2/home/db2inst1/sqllib/lib64/libdb2e.so.1 + 0x9A85254
[29] 0x000003FF8C084DAE
/db2/home/db2inst1/sqllib/lib64/libdb2e.so.1 + 0x9A84DAE
[30] 0x000003FF8C083AA0
_Z17sqljsDrdaAsDriverP18SQLCC_INITSTRUCT_T + 0x1C8
[31] 0x000003FF8BAAA5A8 _ZN8sqeAgent6RunEDUEv + 0x434
[32] 0x000003FF903C691E _ZN9sqzEDUObj9EDUDriverEv + 0x49E
[33] 0x000003FF8E0281E8 sqloEDUEntry + 0x724
[34] 0x000003FF95F88B5E /lib64/libpthread.so.0 + 0x8B5E
[35] 0x000003FF819F9F2A /lib64/libc.so.6 + 0xF9F2A

****************************************************************
* USERS AFFECTED:                                              *
* all                                                          *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* upgrade to version 11.1 mod 4 fix pack 6                     *
****************************************************************

not known / see Local fix

Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :

25.06.2020
15.03.2021
15.03.2021